The Mexican national team's prodigal son is on his way back to Europe, with a return to El Tri and Brazil 2014 in his sights.
“I have ambitions of being in the national team and with a good season it could happen,” said Castillo at a press conference unveiling him at Vallecano on Wednesday.
Added the 29-year-old forward: “”I took the decision to come to this team not only thinking about the national team, but also about playing like I know how here and if the possibility of going to the World Cup comes, even better.
Castillo signed for Pachuca last summer from Greek side Arias. It was the first time he had played in Mexico, but things didn’t work out and he was loaned to Leon last winter.
In total, Castillo featured 20 times in the Liga MX, but only managed to score once, partly because he was shifted out wide and not in his preferred position down the center.
Pachuca agreed to a mutual termination of Castillo’s contract earlier this month, leaving the former Chicago Fire player free to move back over to Europe, where he has played the majority of his career.
Rayo Vallecano finished in eighth position in La Liga.